Finding the Fourth Proportional to 9,623.58, 13,281.63 and 5,431.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,623.58 : 13,281.63 = 5,431.50 : x
2. Step 2: Convert to fraction form
   9,623.58/13,281.63 = 5,431.50/x
3. Step 3: Cross multiply
   9,623.58x = 13,281.63 × 5,431.50
4. Step 4: Simplify right side
   9,623.58x = 72,139,173.35
5. Step 5: Solve for x
   x = 72,139,173.35/9,623.58
6. Step 6: Final answer
   x = 7,496.08